When holographic interferometry is applied to photoelastic testing of experimental stress analysis, a complex stress fringe pattern can be obtained by unpolarized or circularly polarized light.

• 全息干涉法应用于实验应力分析的光弹性试验时,当用非线偏振光或用园偏振光时,能得到一幅复杂的应力条纹图,它是表征主应力和的等和条纹族和表征主应力差条纹族的组合。